How To Select The Resistor Value In a LED Circuit Using Ohm's Law
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- Опубликовано: 3 окт 2024
- This electronics video tutorial explains how to calculate the recommended resistor value in a led circuit using ohm's law.
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Cant believe how many videos failed to explain it as you did and i appreciate the lesson and your time for doind so 👍
Simple yet so elegant. I always tend to confuse the source voltage with the voltage dropped across the first resistor in series circuits. This really cleared all the doubts. Explanation is spot on.
Excellent video which really helped me a lot. The steps are easy to follow as you don't skip any which is easy to do when you know a subject well and the visuals are spot on.
I was watching the beginning and I thought alright how about if there are multiple led's in series or parallel. All are answered. This kind of tutorial is what I need!
Video paced to someone that somewhat get it but not too fast. Well done
We really liked it and used it in class today!! Thanks a lot!!
Best takeaway is that finding the voltage across the resistor is to subtract the voltage drop across the diode from the voltage of the battery. I wish to see an example when the diodes in parallel have different voltages. I think he did it in one other video!
Your math and understanding are spot on.
I was looking for this kind of video but previously i ignored this video because the channel name contains "...chemistry tutor". but now after finishing the video i'm regretting that i neglected this wonderful video.
Thank you very much for this well understood tutorial and also the helpful visual aid.
Thank you sir. all things are explain in very simple manner.
ufffffff! thanks alot sir till now i didnt know how to select .live long
Very good explanation thank you
genuine lifesaver
Very helpful. Thank you.
Bravo maestro!
excellent video. clearly explained
Alright, I'm asking my question here and with your channel because you seem like a freakin math genius based off your content. I'm returning to the basics. I'm looking for tutorials on math calculations (what minus what times what divided by what equals what). I see this math at work on/off, and it basically consists of elementary math, which I haven't regularly practiced in 30 years! If you are more or less familiar with what I'm talking about, can you please point me to a resource (either your channel or elsewhere)? Thank you! =).
it is basic maths
it's called ORDER OF OPERATIONS
Different places around the world call it different things
sometimes BODMAS
sometimes PEMDAS
LOOK IT UP
Good thanks
All good, will forward it to my apprentices, but... one thing, the symbol of those diodes is wrong ;). The diodes shown are silicon diodes, bot LED diodes. If you'd like to show an LED diode symbol, you'd have to add arrow in the direction out of them. The rest is well explained. ;).
I'm talking about the 6minutes example one. :)
Wonderful... Thanks a lot sir 🙏
please use a better mic. you've got more than 1 mil subs!
how to draw 3pieces 3 volt led series on a 9 volt battery as schematic diagram
Can you help with this Q: how about if we have a Voltage source lead to a resistor in series to a parallel with a Led on one side and a resistor on another of this parallel then lead to the ground. R1:324ohm and R2:47ohm. Yellow led, What is the current in series circuit as well as parallel circuit?
Parallel circuit rule: the voltage over the yellow led is about 1.9v so the voltage over R2 resistor in parallel to the led , From there you can calculate currents.
in the series example, if you add one more led at 3.6v drop with a 12 volt source giving you 13.8v drop....the circuit won't operate?
Hi i am new to this subject and want to know how to figure the voltage of an led light, I bought bunch of led lights in a bag that doesn’t have any info. Thanks
Ohm law. I love this
Is the current value is based on color and voltage of the led?
So the output voltage on the resistor changes based on what is after the resistor ?
If I have a source voltage of 24 volts, and 9 volts, in 2 circuits, and a resistor of 25 ohms, how do I find the output voltage of each of these circuits, if there is nothing else in the circuit ?
Is there an online calculator that will allow me to put in the source voltage amount and the resistor value and have it tell me what the output voltage will be ?
The wattage for the resistor would be 50 watts
Thanks
Hey can you do a video on the complex conjugates Theorem pls and if you did already I couldn’t find it
hi there! thank you for helping me through university here in norway.
I was just wondering if you had anyvideos on laplace transforms or fouerier series?
I have looked through your channel but i have not found any
Not yet.
@@TheOrganicChemistryTutor okay, thank you!
If 2 of the LED's are 20ma and the third LED is 30ma, how would that change your total of 60ma and why?
it is o.k if i used 12v halogen light not led for resistor??
what if there are no given voltage only miliampere??
oh yeah he releases his videos at a specific time each day
THAANK YOOOUUU SOOO MUUUCH.🤗😄😀😃😊😁😄😍😘
If i understand right you would need no resistor if your source volatge is the exact same as the voltage the LED needs?
Correct
if the current and Voltage of your voltage source is the exact rated current and voltage of your LED
then that's correct you wouldn' t need a resistor
THE PURPOSE OF THE RESISTOR IS TO LOWER THE VOLTAGE FROM THE SOURCE SO THAT IT DOESN'T BLOW THE LED, if it's not greater than what it is rated there is no need to reduce it
Seems simple (but am 13 but am a kid teen;) )
Perfect video!
50 Watt 25 ohm resistor,
Please let me know how you got the 50 mA? I am missing this part of the equation thanks, (example 1)
The recommended forward voltage of the led is 50mA
based on testing at the factory, a current of 50mA is ok for that size of LED. is taken apriori from factory specs.
how is it always 4 hours after i click on his vids
I have a question sir
What's your question mate,it's been 11 months you haven't asked your question
How do you know that the if= 50ma?
from the datasheet of the L.E.D.
go to a manufacturer ,
Search up and L.E.D., any L.E.D.
download the datasheet and have a look at Vf and If
that's how
its as shrimple as that !
If = 50mA, how can get it
O.O5
Just divide by 1000
why did i even choose computer engineering ugh
fuiiyyyoooohhh